1、Some sparks from a passing train set the haystack on fire.
一列過往火車迸發(fā)出的一些火花點著了干草堆。

2、The algorithm "learns" from the train set and makes assumptions about ratings in the test set.
算法從訓練集中“學習”然后對測試集的評分進行預測。

3、When the bell ring, New Year's train set out on time.
零時的鐘聲響徹天涯，新年的列車準時出發(fā)。

4、Some sparks from a passing train set the haystack on fire
一列過往火車迸發(fā)出的一些火花點著了干草堆。